求翻译：因为现在国内的矿粉开采难度越来越大，频率越来越低，成本越来越高，而且进口矿的量这几年是增加的，包括这几年矿山一直在扩招，我们感觉进口矿整体使用的量增加。是什么意思？

Domestic ore mining more and more difficult, the frequency is getting lower and lower, the cost is getting higher and higher, and the amount of imported ore in recent years increase, including the past few years mine has been in the enrollment, we feel that imported ore the overall amount of increas

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Is more and more big because of the present domestic powdered ore mining difficulty, the frequency is more and more low, the cost is more and more high, moreover import ore quantity these years are the increase, are expanding continuously including these years mine incur, we feel the import ore whol

Because the ore mining country now increasingly difficult, lower frequencies, is increasingly expensive, and these past few years is the increase in the volume of imported iron ore, including enlarging the enrollment of these past few years mine has been, we find increases in overall use of imported

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